Any RPG WORKSTN file with at least one of the keywords DEVID, SAVEIND, MAXDEV(*FILE) or SAVEDS specified on the file description specification is a multiple-device file. Through a multiple-device file, your program may access more than one device.
The RPG program accesses devices through program devices, which are symbolic mechanisms for directing operations to an actual device. When you create a file (using the DDS and commands such as the create file commands), you consider such things as which device is associated with a program device, whether or not a file has a requesting program device, which record formats will be used to invite devices to respond to a READ-by-file-name operation, and how long this READ operation will wait for a response.
You can also refer to information on ICF files in ICF Programming manual.
With multiple-device files, you make particular use of the following operation codes:
On the file description specification you can specify several keywords to control the processing of multiple-device files.
Note: When specifying these control options, you must code the MAXDEV option before the DEVID, SAVEIND or SAVEDS options.
IBM - RPG Related Interview Questions
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Ibm - Rpg Tutorial
Overview Of The Rpg Iv Programming Language
Rpg Programming In Ile
Program Creation Strategies
Creating An Application Using Multiple Procedures
Using Source Files
Creating A Program With The Crtbndrpg Command
Creating A Program With The Crtrpgmod And Crtpgm
Creating A Service Program
Running A Program
Calling Programs And Procedures
Rpg And The Ebusiness World
Obtaining A Dump
General File Considerations
Accessing Database Files
Accessing Externally Attached Devices
Using Workstn Files
Example Of An Interactive Application
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